Piston-valve.



J. B. KINGAN L H. F. RIPKEN.

PISTON VALVE. APPLICATION FILED AUG. 9, 1912.

L 1,371 Patented Jan. 21, 1913.

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PISTON VALVE.

` APPLICATION FILED AUG. 9, 1912.

Patented .13.11.21, 1913.

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pecicatiou or" Letters Patent.

Patented dan., 21., 1913..

To au whom t may concern:

Be it known that we, JAMES B. KINGAN and HUGO F. RIPKEN, citizens of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful improvements in Piston-Valves; and we do yhereby declare the following to be a full, clear, andl exact description of the inven tion, such as will enable others skilled in the art to which lit appertains to make and use the same, reference being had to theV accompanying drawings, and to the letters and gures of reference marked thereon, which form a part of this specification.

rthis invention relates to new and useful improvements in piston slide valves designed for use for releasing steam and other liquid vunder pressure to and from cylinders of engines, pumps, etc.

More specilically, the present invention comprises certain improvements upon our pending application Serial Number 701,401 and differentiates essentially therefrom in that in the present apparatus the disadvantage of the steam having to pass through a long and contracted port through the entire body of the valve is eliminated, whereas, by the present invention, the steam will reach the cylinder much quicker than in the former apparatus and which is considered an important desideratum.

The invention comprises various details of construction and combinations and arrangements of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically dened in the appended claims.

Y vWe illustrate our invention in the accomvpanying drawings, in which `Figure 1 is a central sectional view through the apparatus. Fig. 2 is a 'slight modification ofthe construction of the invention, Fig. 3 is a sectional view showingv both double admission and exhaust ports and Fig. l is a. face view of a spider disk. Reference now being had to the details of vthe drawings by letter, A designates a steam chamber in the casing B into which chamber the fluid pressure is introduced, and C designates a bushing having ports C and D communicating with the cylinder passageway E. Mounted within the bushing is the body F having va return portion F at each end, which is cylindrical shaped with a circumferential groove Gr formed therein,

and H and H designate spider arm disks,

the central portions of which are apertured for the reception of the piston rod l, said spider disk l-l fitting against a shoulder 1 preventing its movement in one direction, while the other spider arm is retained in place by means of a nut J. Each spider arm has a circumferential flange l2 and a flanged packing ring K is itted over each of said flanges and seats upon a shoulder L formed upon a follower or bull ring L', one mounte. about each circumference of a spider d slr. lt will be noted upon reference to the drawings that, when the parts are assem bled as shown in Fig. 1, the spider arms serve to hold the bull rings frictionally against the ends of the body F.

A ported follower or bull ring hl is seated in the circumferential groove in the return portion F of the body portion ofthe piston, said bull ring N being provided with two annular shoulders u'pon one of which a flanged packing ring t) is seated and upon the other a similar angled packing ring 0", the danges of the packing rings and U being flush respectively with the marginal edges of the openings O2 in the circumference of the follower or bull ring N. A second bull ring or follower, designated by letter Q, is also seated in each circumferthe end of the recess in the return portion F of the body of the piston. The live steam which is introduced into the chamber is adapted to pass through shown by arrows in. Fig. 1 of the drawings.

lu operation, when the parts are adjusted in position shown'in Fig. 1 of the drawings, it'will be noted that the packing rmgs forming portions of the edges `of the ports O2, and the packing ring are starting to open the ports C and D 1n thebushing C simultaneously, thereby *giving a double admission of pressure through the passageway E to theeylinder, this double admission remaining until'the valve reaches its point of cut-0H, thereby insuring a much more desirable distribution of pressure than could otherwise be obtained or than is obtained' through the use ofV a double port the port T, as

16 Y communication between live and exhaust.

. valve.

I rings R and 0 and remain so until after the exhaust closure has occurred and admission is started, thereby preventing any pressure chambers.

In Fig.` 2 of the drawings willbe seen a slight modification of the construction of apparatus whereby the same functions may be performed asin the construction shown in Fig. il, 4the differences in construction' between this modified form and that shown in Fi'gr2 consisting in the manner ofico'nstructing the wings or anges which, in Fig. 2, instead of forming a part of the body of the valve, are a part ofthe spiders S, said eX- tensions being designated by letter S', and

S2 designates the body between theshell intermediate the spiders S. In said modified form the bearing and bull rings are of similar construction as those illustrated in Fig. of the drawings, and designated as follows RZ is a packing ring upon the circumf rence of the cylindrical wing S', Q5 a'follower or bull rin O3, 04, K and K2 packing rings and N a bull ring or follower. in this inodied form, it will be noted that an outsideV admission valve is produced, that is a valve having its live pressure'c'hamber at the outer ends instead of in the middle as illustrated in Fig.l l of the drawings. t

In Fig. 3 of the drawings, we have shown a sectional View through the valvel and illustrating both the double admission and exhaust and in which the inside valve arrangement'is similar to that disclosed in Fig. l., comprising the'piston rod I with the body F2 mounted within the bushing, the return portion F* being provided with a groove G2 therein, and H3 designate spider'- arm disks, the central portion of one of said spider arms resting against the shoulder H* and the other being engaged by a nut .l upon the threaded end of the piston. The spider arms HS have recesses' HX. formed in the circumferenee thereof and each is provided with a port H5, and Hs designates a bull ring mounted in said recess. H7 is a flanged packing ring engaging shoulders upon the ppposite packing rings Aengaging over a flange Hs and the outer end of the spider arms. The bushing K4' is provided with a port K5 which registers with the chamber K6. Each-end of the piston is similarly equipped with an extensionpf the 'spider armsfor the purpose of providing a double admission and eX- haust..

edges of the bull ring, one of said A While we have shown kour invention made up of cert-ain parts 4assembled as shown and described, it will-be understood that, 1f desired, the valve may be made in the form` of a single or solid casting and may be varledcomprising a casing, a bushing mounted' therein and provided with a series of ports adapted to communicate with the cylinder of an engine and provided with other ports for communication with the steam chamber, a piston cylinder'with projections at the ends thereof which are circumferentially grooved, bull rings mounted within said groovesyone of said rings being provided with ports, packing rings about the edges of said rings and outer circumference of the piston cylinder and so arranged as to adord a double admission of pressure to the cylinder, as set forth.

2. A piston slide valve for engines, etc., comprising a. casing, a` bushing mounted therein and provided with a series of ports adapted to communicate with the cylinder of an engine and provided with other ports for communication with the steam chamhena piston cylinder with projections at the ends thereof which are circumferentially grooved, bull rings mounted within said grooves with their adjacenty edges'in contact with each other, one of said rings being provided with 1 ports, ianged packing rings mounted upon shouldered portions Iof said rings and adording means for a double admission of pressure to the cylinder of an engine, asset forth.

3. piston slide valve for engines, etc.,

comprising a casing, a bushing mounted therein and provided with aseries of ports adaptedto communicate with the cylinder of an engine and provided with other ports for communication with the steam chamber, a piston cylinder comprising va' hody portion with a return cylindrical projecting portionat each end thereof which is circumferentially grooved, a spider disk engaging Ithe ends of said body portion, a piston rod fastened to said disk, bull and packing rings` I seated in said grooves Vand affording means whereby a double admission of pressure to the cylinder of an engine is aorded, as set forth. l

4. A piston slide valve for engines, etc., comprising a casing, a bushing mounted therein and provided with a series of ports adapted 'to communicate with the cylinder of an engine and provided with other ports for communication with the steam chamber, a piston cvlinderrcomprising a body portion with a return cylindrical proiecting'portion at each end thereof which is eircumferentially l grooved, a spider disk engaging the ends of saidbody portion` and provided each with t a circumferential flange,'a bull ring about v to the cylinder of an engine, as set forth. e

5. A piston slide valve for engines, etc., comprising a casing, a bushing mounted therein and providedwith a series of ports adapted to communicate with the cylinder of an engine and'provided with other ports for communication VWith the steam chamber, a piston cylmdercomprising a body portion with a return cylindrical projecting portion at each end thereof which is=circumferen tially grooved, a spider disk engaging the ends of said body portion and provided 'each i with al circumferential ange, a bull ring about-each spider diskl and in contact each with one of said Hanges, bull ringsmounted in each of said grooves, one of said rings being provided with ports and each ring shouldered, .angled packing rings mounted upon said shoulders, a bull ring aboutthe circumference of each disk and -provided with a circumferential shoulder, an angled packing ring about the shoulder upon the bull ring about each disk and against which an adjacent bull ring ofthe disk frictionally bears, and a piston upon which said disks are mounted, as set forth.

6. A piston slide valve for engines, etc., comprising a casing, a bushing mounted therein and provided with a series' of ports adapted to communicate with the cylinder 'of an engine, other ports for communication witha steam chamber, ay piston cylinder comprising a body portion with spider disk having arms which are circumferentially recessed,-suitably packed bull rings mounted in said recesses, av piston rod passing through said spider arms, abody about said rod and engaging said arms and providedv with a return flange circumferentially recessed and suitably packed bull rings therein, as set In testimony' whereof We hereunto affix our signa-tures in the presence of two Witnesses. f y l JAMES B. KINGAN. HUGO F. -R1PKEN. Y

Witnesses: i

'D. G. CAMPBELL, FRANK WAREN. 

